MainAcitivty.java

package com.m7.nomad;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AutoCompleteTextView;
import android.widget.ImageView;
import android.widget.ListView;

import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import com.actionbarsherlock.view.MenuItem;
import com.actionbarsherlock.widget.SearchView;

public class MainActivity extends SherlockFragmentActivity implements
  	SearchView.OnQueryTextListener {

	ListView placesListView;

	static Context context;
	PlacesListAdapter adapter;
	private Menu mainMenu = null;
	public SearchView mSearchView;

	private final String[] places = new String[] { "Mysore", "Bangalore",
			"Mangalore", "Wayanad", "Bandipur National Park National Park",
			"Chickmaglur", "Bandipura", "Coorg", "Kodaikanal", "Hampi",
			"Ghati Subramanya", "Mekedatu", "Muththathhi", "Shivasamudram",
			"Talakadu", "Savana Durga" };

	private final String[] distances = new String[] { "126", "365", "956",
			"621", "65", "98", "654", "23", "75", "542", "58", "26", "95",
			"64", "542", "69" };

	private final String[] icons = new String[] { "wildlife", "waterfall",
			"hillstation", "hillstation", "wildlife", "waterfall",
			"hillstation", "wildlife", "waterfall", "beach", "hillstation",
			"wildlife", "waterfall", "hillstation", "hillstation",
			"hillstation" };

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		context = this;

		Log.i("Nomad", "onCreate");

		mSearchView = (SearchView) findViewById(R.id.action_search);

		placesListView = (ListView) findViewById(R.id.list_view_places);
		placesListView.setEmptyView(findViewById(R.id.empty));

		List<Place> thePlaces = new ArrayList<Place>();
		for (int i = 0; i < places.length; i++) {
			Place pl = new Place(places[i], distances[i], icons[i]);
			thePlaces.add(pl);
		}

		adapter = new PlacesListAdapter(MainActivity.this,
				R.layout.list_item_places, thePlaces);

		placesListView.setAdapter(adapter);
		placesListView.setTextFilterEnabled(true);

		placesListView.setOnItemClickListener(new OnItemClickListener() {
			@Override
			public void onItemClick(AdapterView<?> a, View view, int position,
					long id) {

				startActivity(new Intent(MainActivity.this, PlaceActivity.class));
			}
		});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		Log.i("Nomad", "onCreateOptionsMenu");
		super.onCreateOptionsMenu(menu);
		MenuInflater inflater = getSupportMenuInflater();
		inflater.inflate(R.menu.activity_main, menu);

		mainMenu = menu;

		MenuItem searchItem = menu.findItem(R.id.action_search);

		// Search View
		mSearchView = (SearchView) searchItem.getActionView();

		styleSearchView(mSearchView, MainActivity.this);
		setupSearchView(searchItem);

		mSearchView.setOnSearchClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				// hide action item
				if (mainMenu != null) {
					mainMenu.findItem(R.id.action_category).setVisible(false);
					mainMenu.findItem(R.id.action_sort).setVisible(false);
				}

			}
		});

		mSearchView.setOnCloseListener(new SearchView.OnCloseListener() {
			@Override
			public boolean onClose() {

				adapter.getFilter().filter("");
				// re-show the action button
				if (mainMenu != null) {
					mainMenu.findItem(R.id.action_category).setVisible(true);
					mainMenu.findItem(R.id.action_sort).setVisible(true);
				}
				return false;

			}
		});

		Log.i("Nomad", "after setupSearchView()");
		return true;
	}

	private void setupSearchView(MenuItem searchItem) {
		mSearchView.setIconifiedByDefault(true);
		mSearchView.setOnQueryTextListener(this);
		mSearchView.setSubmitButtonEnabled(false);

		searchItem.setShowAsActionFlags(MenuItem.SHOW_AS_ACTION_ALWAYS);
	}

	public static void styleSearchView(SearchView searchView, Context context) {
		View searchPlate = searchView.findViewById(R.id.abs__search_plate);
		searchPlate.setBackgroundResource(R.drawable.abs__search_plate_white);

		ImageView searchCloseIcon = (ImageView) searchView
				.findViewById(R.id.abs__search_close_btn);
		searchCloseIcon
				.setBackgroundResource(R.drawable.actionbar_search_close_bg_pressed);

		ImageView searchButtonIcon = (ImageView) searchView
				.findViewById(R.id.abs__search_button);
		searchButtonIcon.setImageResource(R.drawable.ic_menu_search);

		ImageView searchMagIcon = (ImageView) searchView
				.findViewById(R.id.abs__search_mag_icon);
		searchMagIcon.setImageResource(R.drawable.ic_menu_search);

		AutoCompleteTextView searchText = (AutoCompleteTextView) searchView
				.findViewById(R.id.abs__search_src_text);

		searchText.setTextColor(context.getResources().getColor(R.color.white));
		searchText.setHintTextColor(context.getResources().getColor(
				R.color.white));
	}

	public boolean onOptionsItemSelected(MenuItem item) {

		switch (item.getItemId()) {
		case R.id.action_category:
			showDialog();
			break;
		case R.id.action_about:
			startActivity(new Intent(MainActivity.this, AboutActivity.class));
			break;
		default:
			// return super.onOptionsItemSelected(item);
			break;
		}
		return true;
	}

	/* Dialog Fragment */
	void showDialog() {
		DialogFragment newFragment = CategoriesDialogFragment
				.newInstance(R.string.place_about);
		newFragment.show(getSupportFragmentManager(), "dialog");
	}

	/* Search Filtering */
	public boolean onQueryTextChange(String newText) {
		Log.i("Nomad", "onQueryTextChange");

		if (TextUtils.isEmpty(newText)) {
			adapter.getFilter().filter("");
			Log.i("Nomad", "onQueryTextChange Empty String");
			placesListView.clearTextFilter();
		} else {
			Log.i("Nomad", "onQueryTextChange " + newText.toString());
			adapter.getFilter().filter(newText.toString());
		}
		return true;
	}

	public boolean onQueryTextSubmit(String query) {
		Log.i("Nomad", "onQueryTextSubmit");
		return false;
	}

	public boolean onClose() {
		Log.i("Nomad", "onClose");
		return false;
	}

	protected boolean isAlwaysExpanded() {
		return false;
	}
}

PlacesListAdapter.java

package com.m7.nomad;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ImageView;
import android.widget.TextView;

public class PlacesListAdapter extends ArrayAdapter<Place> implements
  	Filterable {

	public Context mContext;

	List<Place> mPlaces, orig;

	public PlacesListAdapter(Context context, int resource, List<Place> places) {
		super(context, resource, places);
		// TODO Auto-generated constructor stub
		this.mPlaces = places;
		this.mContext = context;

		orig = new ArrayList<Place>(this.mPlaces);

	}

	@Override
	public Place getItem(int position) {
		// TODO Auto-generated method stub
		return mPlaces.get(position);
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {

		ViewHolder holder;

		if (convertView == null) {
			LayoutInflater viewInflater;
			viewInflater = LayoutInflater.from(getContext());
			convertView = viewInflater.inflate(R.layout.list_item_places, null);

			holder = new ViewHolder();
			holder.placeTitle = (TextView) convertView
					.findViewById(R.id.place_title);
			holder.placeDistance = (TextView) convertView
					.findViewById(R.id.place_distance);
			holder.placeCategoryIcon = (ImageView) convertView
					.findViewById(R.id.place_category_icon);

			convertView.setTag(holder);

		} else {
			holder = (ViewHolder) convertView.getTag();
		}

		Log.i("Nomad", mPlaces.get(position).getPlaceName());
		holder.placeTitle.setText(mPlaces.get(position).getPlaceName());
		holder.placeDistance.setText(mPlaces.get(position).getPlaceDistance());
		holder.placeCategoryIcon
				.setImageResource(R.drawable.icon_category_hillstation);

		// // Setting Alternative Row Colors
		if (position % 2 == 0) {
			convertView
					.setBackgroundResource(R.drawable.list_view_places_row_1);
		} else {
			convertView
					.setBackgroundResource(R.drawable.list_view_places_row_2);
		}

		return convertView;
	}

	static class ViewHolder {
		TextView placeId;

		TextView placeTitle;

		TextView placeDistance;

		ImageView placeCategoryIcon;
	}

	@Override
	public Filter getFilter() {
		// TODO Auto-generated method stub
		return new PlaceFilter();
	}

	private class PlaceFilter extends Filter {

		@Override
		protected FilterResults performFiltering(CharSequence constraint) {

			constraint = constraint.toString().toLowerCase();
			FilterResults result = new FilterResults();

			if (constraint != null && constraint.toString().length() > 0) {

				List<Place> founded = new ArrayList<Place>();
				for (Place item : mPlaces) {
					if (item.toString().toLowerCase().contains(constraint)) {
						founded.add(item);
					}
				}

				result.values = founded;
				result.count = founded.size();
			} else {
				result.values = orig;
				result.count = orig.size();
			}
			return result;
		}

		@Override
		protected void publishResults(CharSequence constraint,
				FilterResults results) {
			clear();
			for (Place item : (List<Place>) results.values) {
				add(item);
			}
			notifyDataSetChanged();
		}

	}

}